Has a large protuberance on the snout (Ref. 37816).

Description: Characterized further by adult having mainly blue-grey body color with blue lines bordering hexagonal plates of carapace; smaller fish whitish to bluish grey color with numerous, large brown or greyish polygons and small black spots, often in clusters of four; quadrangular carapace in cross section, becoming oval anteriorly; concave sides and ventral surface; relatively sharp lateral and pelvic ridges; low and inconspicuous dorsal ridge; anal fin behind level of last dorsal ray; adult snout produced into large conical protuberance, overhangs mouth; rounded caudal fin (Ref. 90102).